82 lines
2.5 KiB
Nix
82 lines
2.5 KiB
Nix
pkgs: config:
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let
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inherit (pkgs)
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callPackage
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closureInfo
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lib
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runCommand
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s6-rc
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stdenv
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stdenvNoCC
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writeScript
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writeText;
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# we need to generate s6 db, by generating closure of all
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# config.services and calling s6-rc-compile on them
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allServices = closureInfo {
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rootPaths = builtins.attrValues config.services;
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};
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s6db = stdenvNoCC.mkDerivation {
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name = "s6-rc-db";
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nativeBuildInputs = [pkgs.buildPackages.s6-rc];
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builder = writeText "find-s6-services" ''
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source $stdenv/setup
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mkdir -p $out
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srcs=""
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shopt -s nullglob
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for i in $(cat ${allServices}/store-paths ); do
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if test -d $i; then
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for j in $i/* ; do
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if test -f $j/type ; then
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srcs="$srcs $i"
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fi
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done
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fi
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done
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s6-rc-compile $out/compiled $srcs
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'';
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};
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s6-pseudofiles = pkgs.s6-init-files;
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profile = writeScript ".profile" ''
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PATH=${lib.makeBinPath (with pkgs; [ s6-init-bin busybox execline s6-linux-init s6-rc])}
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export PATH
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'';
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pseudofiles = writeText "pseudofiles" ''
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/ d 0755 0 0
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/bin d 0755 0 0
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/etc d 0755 0 0
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/run d 0755 0 0
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/dev d 0755 0 0
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/dev/null c 0666 root root 1 3
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/dev/zero c 0666 root root 1 5
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/dev/tty1 c 0777 root root 4 1
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/dev/tty2 c 0777 root root 4 2
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/dev/tty3 c 0777 root root 4 3
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/dev/tty4 c 0777 root root 4 4
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/dev/tty c 0777 root root 5 0
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/dev/console c 0600 root root 5 1
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/proc d 0555 root root
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/sys d 0555 root root
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/dev/pts d 0755 0 0
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/etc/init.d d 0755 0 0
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/bin/init s 0755 0 0 ${pkgs.s6-init-bin}/bin/init
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/bin/sh s 0755 0 0 ${pkgs.busybox}/bin/sh
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/bin/busybox s 0755 0 0 ${pkgs.busybox}/bin/busybox
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/etc/s6-rc d 0755 0 0
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/etc/s6-rc/compiled s 0755 0 0 ${s6db}/compiled
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/etc/passwd f 0644 0 0 echo "root::0:0:root:/:/bin/sh"
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/.profile s 0644 0 0 ${profile}
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'';
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storefs = callPackage <nixpkgs/nixos/lib/make-squashfs.nix> {
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storeContents = [ pseudofiles s6-pseudofiles s6db pkgs.s6-linux-init ] ++ config.packages ;
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# comp = "xz -Xdict-size 100%"
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};
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in runCommand "frob-squashfs" {
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nativeBuildInputs = with pkgs.buildPackages; [ squashfsTools qprint ];
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} ''
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cp ${storefs} ./store.img
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chmod +w store.img
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mksquashfs - store.img -no-recovery -quiet -no-progress -root-becomes store -p "/ d 0755 0 0"
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mksquashfs - store.img -no-recovery -quiet -no-progress -root-becomes nix -pf ${pseudofiles} -pf ${s6-pseudofiles}
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cp store.img $out
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''
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